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Question by Hness · Dec 05, 2014 at 11:51 AM · post-process-effect

Post process/warp effect behind objects

I'm looking to achieve a small distortion (of the environment) effect at the tip of a gun when fired, applied with a custom shader. What is the simplest approach to creating such an effect, that will have proper depth in the scene? Ideally, it would be great if it could easily be transformed in the scene to match the model-view matrix of the gun.

I've tried attaching a quad to the tip of the gun that would be rendered by a second camera, to a solid colour, and drawing it to a render texture. The effect shader would check if the pixel was the solid colour, and only apply the effect to that. However, simply attaching the quad to the player killed the performance to almost nothing, and I'm not sure if it would have worked anyway.

I have a very minimal understanding of Unity, so I haven't been able to make any progress on it in weeks. It's gotten to the point where it needs to be completed though.

Thank you for any help.

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